Phonograph system



Jan. 3o, 1951 L. z.y LA FOREST 2,539,515

PHONOGRAPH SYSTEM Filed Sep't. 1'7, 1946 2 Sheets-Sheet 1 42:.-J Wynn@ 5 3 J INVENToR. 42 30, 77W LousZlaEorest yBY ATTORNEY Jan. 30, 1951 L, Z, LA FOREST 2,539,515

PHONOGRAPH SYSTEM f Filed sept. 17, v194e; -2 sheets-sheet 2 IN UT INVENTOR ,Louis Zlaorest BYMA ATTORNEY Patented Jan. 30, 195i UNITED STATES PATENT OFFICE PHONOGRAPH' SYSTEM Louis Z. Lay Forest, Parsippany, N. J., assg'rnor to Thomas A. Edison, Incorporated', Westr Orange, N. J., a corporation of New Jersey' Appicatiori` September 17, 194.6,` Serial No. 697,487

(CIl 179-6) 15 Claims. 1a

This invention relates to phonograph systems which are adapted for the selective` recordation of signals from different sources. More particularly, the invention-relates to an improved phonograph system forselectively recording dictation or telephone conversations.

Heretoiore phonographic recordingv machines of the character mentioned have employed' manipulative controls for connecting the phonograph to one or another of the several signa-l sources-for example to a telephone or a dictation microphone-and for conditioning the machine or recording the selected source as shown for example by Dunning Patent No. $305,681. This conditioning is, for example, to place` the record carrier in continuous rotation during recordation of. telephone conversations because of the continuity of those conversations, and to condition the phonograph drive system for quick start-and-stop rotation of the record carrier when it is desired to record dictation because of the frequent interruptions characterizing dictated matter. Since this selective conditioning of the phonograph system has been carried. out by an independent manipulation of a control for this purpose, an inadvertent failure by the oper.- ator to properly adjust this control will result in a complete failure of the phonograph to carry out the intended recording operation.

It is lan object of the present invention toeliminate the need for the operator to. make any independent control manipulation on the machine to condition it for the recordation ofa. selected one of several signal sources.

It is another object to provide-automatic means for conditioning the phonographsothat itwill record telephone conversations as an incident to the use of the telephone instrument. and for conditioning the phonograph for. recording dictation as an incident to theA use of the dictation-microphone.

Itis a further object of my invention to provide means for automatically conditioning a phonograph for recording sound signals from one of a plurality of sources as anincident of the removal of a hand microphone from its support adapted for picking up the Soundsv from the se.- lected source. Y

Another object is to provide means-for automatically setting the recording,` speedz. of the phonograph record carrier, to suit, the. requirements of the particular recording operation, as an incident to the selection of the soundsource.

It is another object ofmy-inventionfto provide novel means for,- regulating the: speed.y of; the

phonograph record carrier so that it may properlyv reproducerecordations made at diierent record speeds.

Ity is a further object to provide in a phonograph a dual control arrangement whereby the phonograph may be started or stopped from diiferent stations at which it is desired to record signals of different character.

Other and allied objects of my invention will more fully appear from the following description andthe appended claims.

In the description of my invention reference is had to the accompanying drawings, oi which:

Figure-1 is a partial plan View of a phonograph embodying Igny invention;

Figure 2 vis asectional view taken substantially on the line 2-2V of Figure l;

Figure 3y is ay fragmentary iront elevational viewtaken substantially on the line 3 3 of Figure 2;

Figure i is a` fragmentary sectional view taken substantially onf the line 4-4 of Figure l;

Figure-5 is a schematic diagram oi my invention as incorporated in the. phonograph shown inthe foregoingiigures; and

Figure. (i4 is another schematic diagram showing adifferent embodiment of my invention.

In Figures land 2 there-is a fractional showing of a conventional phonograph of thedictating-machine type.- This phonograph has a top frame 'plate i that is typically mounted in a suitable cabinet (notfshown). This plate has left and. right standards 2, of which only the left standard is shovvn,.for supporting two cross rods 3 Aand 4, and ithas an intermediate standard 5 for support-ingarecord. carrier S herein shown by way of example-as a mandrel` adapted for carrying a-cylindrical record. The record carrier 6 is rotated-by a motor M locatedbelow the frameplate l, the motor being coupled by a belt 9 to a pulley 8 that is journalled to the leit standardY 2 atv a point Vaxially inline-with the shaft @a of the record. carrier. ord carrier tothe. pulley 8 is effected according to the presentY embodiment V oi my inventiony by either oneor; thevotherof two coupling means. The .main coupling means-i. e., the. one used for dictationV recording-v only--comprisesY a clutch iii which is oper-ated byadouble-ar-med lever i .i that is vpivoted to theY plate I at i2. This leverV il is coupled-.by a ,linie-I3 tothe armature oi .an electromagnetic actuatingdevice Iii enclosed-for instance in-.a-box llbelow theirame. i. Thisactuating device: is. preferably of the-form disclosed inzthe Langley Patent-No. 138il5486. issued une 7,

The coupling of the rec- 1921. Since this device is well known in the art it is sufficiently shown in the present application by the diagrammatic view thereof appearing in Figures l and 5. The device comprises start and stop coils i5 and il which are selectively energized to actuate an armature i5 that is connected to the link i3 above mentioned. rThe current energization of the coils of this device is controlled by a hand switch i9 mounted typically on a hand type of dictation microphone 29 as indicated in Figure 1.

A carriage 24 for a reoord-cooperable translating device 25 is mounted slidably on the rods 3 and 4 for traveling movement'along the record 1. This movement is produced by means of a feed screw 25 rotatably mounted in parallel relation to the rods 3 and. 4 on the standards 2. The feed screw is rotated in a fixed speed relationship to that of the record carrier by gearing comprising a pinion 2l on the shaft 6a, an intermediate gear 2S journalled at 29 to the standard 5 and a gear 39 pinned to the feed screw. The carriage 24 has a sleeve 24 forming a long bearing for the carriage on the rod 3. On this sleeve, within the hollow portion of the carriage, there is pivoted a cam member 32 which is turned on the sleeve by a hand lever 33. This lever is coupled to the cam member by a link 34 pivoted to the lever at 33 and to the cam member at 32. The cam member 32 controls the engagement and disengagement of a feed nut 35 with and from the feed screw 26; moreover, the cam member is splined to the rod 3 so that the rod is turned therewith as' the hand lever is moved. This splining is effected by a key 36' passing freely through the sleeve and engaging a slot 36 in the rod, the purpose for turning the rod being hereinafter described.

The hand lever 33 is coupled to the translating device 24 to shift the device between recording and reproducing conditions. Preferably, a translating device and control mechanism therefor is employed such as is shown and claimed in the pending joint application of Charles W. Dann and Richard M. Somers, Serial No. 604,316, filed July 11, 1945 and assigned to the present assignee. It will be understood however that my invention is not limited as to the type or construction of the translating device or the manner in which it is controlled other than that preferably I employ a translating device of the electrical type-for example, piezoelectric-as shown by that pending application. For the present purposes, it is sufficient to state that the translating device has a pivoted control arm 38 (Figure 1) which has a roller 31 at its free end overlying the hand lever 33 and biased thereagainst so as to receive movement therefrom as the hand lever is adjusted between so-called recording and reproducing positions.

As shown in Figures 1, 2 and 3, the present embodiment includes an alternative coupling means between the pulley 3 and the record carrier 6. This alternative coupling means, which is used during the recordation of telephone conversations as is hereinafter fully explained, comprises a clutch 59. Power from the pulley 8 is taken by way of a pinion 5i on this pulley, an intermediate gear 52 and a gear 53 that is journalled to the frame 2 shown in Figure l. The gear 53 has an axially-extending sleeve 54 which forms one element of the clutch' 50. In axial alignment with the element 54 is a movable clutch member 55 which is keyed to 'a stub 4 shaft 56 journalled to the standard 5 (Figure 3). Pinned to the shaft 56 is a pinion gear 51 meshing with the aforementioned intermediate gear 28. When the clutch elements 54 and 55 are engaged, the pulley 8 is coupled to the record carrier to rotate the latter in the same direction as when it is coupled to the pulley by the clutch I0. However, the pinion 5l and the gears 52 and 53 are so arranged that the speed of rotation of the record carrier when driven by way of the clutch 50 will be considerably less than when driven by way of the clutch I This feature of driving the record carrier at a slower speed during the recordation of telephone conversations is however not herein broadly claimed because the broader aspects thereof are described and claimed in the pending application of Richard M. Somers, Serial No. 632,183, now Patent No. 2,535,657 dated December 26, 1950 and having a common assignee with the present application.

The clutch 50 is automatically controlled so that it is normally engaged Whenever the phonograph is to be used for the recordation of telephone conversations. The control mechanism comprises a member 58 which is pivoted at 59 to a bracket on the frame plate i. The member 58 is actuated by an arm 6I secured to a shaft E3. This shaft extends along the standard 5 to the front of the machine and is journalled in a rear boss 54 and a front bracket 65 as shown in Figures l and 2. The arm 5| has a pin and slot connection 63 with the member 58 through which the turning of the shaft 63 will cause an engagement, or disengagement, of the clutch 50 according to the direction of movement of the shaft. On the forward end portion of the shaft 63 there is pivotally mounted a collar 67 that is provided with a radially-extending pin 68. This pin engages a cam slot 59' provided in the upper portion of a rocking plate 59 which is pinned to a small transverse shaft i5 that is journalled in a boss 'i6 of the frame plate I. Although the collar .61 is mounted loosely on the shaft 63 it has a releasable connection thereto. This connection comprises a knob 'F2 pinned to the front end of the shaft and a spring finger 12a on the knob which engages a peripheral notch 61a in the collar as shown in Figure 4. This releasable connection is provided so that the relative angular positioning of the collar to the shaft 63 may be varied for the purpose hereinafter explained.

The plate 69 abovementioned is rocked in unison with a hook-shaped member 7i) which is pivoted to the front part of the frame plate and used for supporting the dictation microphone 2G during periods when the microphone is not in use. Such a support member is old in the art and is known to serve a double purpose, which is to support the hand microphone and to tilt downwardly as the hand microphone is placed thereon to operate a control such as the switch 42. In the present embodiment the support member 'l5 is pinned to the shaft 'i5 and moved in unison with the plate 69. Below the support member 75 and underneath the frame l, there is provided a at pivoted lever ll which has an upstanding portion abutting with the member 'l0 and also a horizontal portion in contact with an abutment 42a of the switch 42. The abutment 42a of the switch 42 is constantly urged upwardly with a sufcient force to hold the support member 'l in a raised position and the switch in a closed position when the hand microphone is off the support. When the switch isclosed a power supply 'asegure circuit '|8` (Figure 5) for the motor M -iscl'osed and the motor is then energized vto drive the pulley 8. However, the biasing force of the switch button 42a is insuflicient yto support the weight of the hand microphone 2`0`. Consequently, lthe switch is in open condition and the motor' M is at a standstill when the hand microphone' 20 is on its support.

It will be understood' from' the foregoing description that a movementof the' support member 70 causes the shaftv 63 to be turned by way. of the plate 6g, pin 68; collar- 6T and` associated knobv T2'. Accordingly; when the'hand microphone 20 is placed on the support, the rod' Giis turned countercl'ockwise as viewed in Figure 3 to engage the clutch 59; Since the-hand; microphone 2t is supported normally by the-member TD whenever the'phonograph` is not used for therecordation of' dictation, the clutch dstandsnormally engagedV and is ready to cause continuous rota-tion of the record carrier whenever the operator desires to recordtelephone conversations as will be hereinafter fully apparent.

Precautionary means isv provided to prevent the engagement of both the clutches land G at the same time. lThis means comprises a pawl 63a pinnedtothe rodv 631 as shown in Figure 3. This pawl eng-ages a lugA II-a on the lever H and locks the clutch l0 in disengaged position whenever the clutch 56 is-engaged. Reversely, the lug underlies the tip of the paw-l and prevents the engagement of the clutch 50 whenever the clutch ill is engaged.

s In the present embodiment, a switch 80 is placed adjacent to the switch 42. The switch 8|] is of a shielded type and hasv an actuating button 89a adapted to be contacted and moved by an extension 11a of the pivotedl member 11, it being understood that the combined biasing force of. both buttons 42a and 80a. is insufi'icient to support the Weight o-f the hand microphone 20 in order that both switches will be held in their open conditions when the microphone is at rest on the support lll. When the switchv 80 is in its open position it opens the microphonecircuit 8 a. This circuit is connected by leads 8| to a multipole switch 4| which is for connecting the circuits of the phonograph for recording or reproducing purposes as will hereinafter appear.

The telephone from which the recordation of telephone conversations is to be made comprises for example a hand-combination desk set86. In proximity to the telephone box 88 there is placed a magnetic pickup device 85. Preferably the telephone box is placed on a stand 81 and the pickup is mounted within the base of this stand. The stand 8l is provided with a rearward upstanding portion 89 for supporting a switch 90. The switch 99, as in the case of the switches 42 and 80, is operated automatically by the mounting and removal of the hand set 86a of the telephone in connection with its supporting cradle 86e, it being understood that the hand set includes the usual telephone microphone and receiver. This automatic operation of the switch 9|) is accomplished by providing the switch with an arm 9| pivoted at 92 and extending forwardly at 9|a to rest upon the plunger switch 8617 of the telephone (Figure 5). The pivoted arm 9| has a rear extension carrying a pair of insulated contact members 93 and 94 which contact respective stationary switch points 95 and 96 diagrammatically shown. The switch 90 is of the double-poleV single-throw variety and is adapted to open and close the circuits indicated at 18a and (Hlm` The circuit 18o? is in parallelwith' the' supplyA circuit i8 aforementioned and the circuit 8| b' is in parallell with a voice circuit' formed' by the leads 8|. In Figure 5' the telephone hand set-86a is`shown slightly raised and' accordinglyth'e circuits 18a and 8|b' are closed by the switch 9U due to the upward movement ofthe telephone plungerswitch 8612'. However, as the handset is placedl i'n the cradle the arm 9i' isv rocked" downwardly and the switch 96' is opened. Thus theswitch 99 controls the operation of the motor M' and' the connection ofthe pickupiii'atov the circuit 8|.

Connected" to the amplifier through the switch 4| is a' circuit it@ leading to' the translating device 25'. A connection of this circuit through the switch 4| may be effected alternately vby the pairs of terminals llll and |92". The switch 4| is preferably of the rotary type and is for' the purpose of changingv the' circuits liiil' and 8|' from the input to the outputo'f the amplifier, or' vice versa, so that the amplifier may serve to` amplify the signal currents from the dictation microphone or telephoneduring recording and from the translating device during reproducing;A the' switch 41 being controlledl bythe hand lever @Shy way of the rodv 3 and a suitable coupling means |93 (schematically shown) which couples the central shaft 4m of the switch thereto'. The shaft Illa may carry an insulating platev Hit having the contact pairs |95 and IG'Ei respectively connected to the input and output of; the amplifier. Accordingly, if the plate |94 is turned' clockwise as shown in Figure 5 the pair of contacts |05 will be moved to engage the respective terminals |02 and the pair of contacts |95 will be moved to engage the respective terminals 8ste reverse the connection of the amplifier 4i) so that the circuit I'llll will be connected to the input and the circuit 3| to the output ofthe amplifier; In the power supply circuit of the phonograph therev is a switch 4ta for connecting the amplierv 40 thereto. This switch is normally left closed when the phonograph is on stand-by operation for either the recordation of telephone conversations or of dictation. Also during stand-by, the hand set a is normally resting in the cradle 86o and the hand microphone on the support '10. Upon then removing the hand set from thel cradle, as is necessary when the telephone is to be used, or upon removing the hand microphone 2li from its support, as is necessary when the phonograph is to be used for the recordation of dictation, the microphone which is so selected is automatically connectedA to the phonograph and the phonograph drive system is conditioned for operation. This conditioning involves placing the drive system in continuous effective operation as the hand set is removed-that is, an operation wherein the record carrier is in cont n ous rotationand involves starting the motor M and placing` the clutch i@ under the control of the hand switch l 9 for quick start-stop rotation of the record carrier when the hand microphone 2% is removed from its support. For example, if the hand set 86a is removed while the hand microphone 20 is on its support the switch 90 is closed to start rotation of the record l by way. of the clutch 50, which is now being held engaged by the weight of the hand piece 2E' on the support 1li.; also, the closing of the switch 9|) connects the pickup 85 to the circuit 8|' and thus through the amplier to the translating device 25. Moreover, as aforementioned, during the recordation of telephone conversations the record carrier is turnedv ata slower' speed than`Y for the recordation of dictation.- This 'is done so as to get a longer time of recordation on a given record. While this expedient entails some sacrice in the quality of the recording, it is generally permissible in the recordation of Y telephone conversations as is pointed out in the Somers application Serial No. 632,183 aforementioned. On the other hand, if the hand microphone 20 is removed from the support III, the upward movement of the support will at first disengage the clutch 50 and remove the lock on the clutch I to permit the latter to be engaged as the hand switch I9 is operated; also, the switches d2 and 80 are closed to start the motor M and to connect the hand microphone to the circuit SI and thus through the amplifier to the translating device 25.

When the lever 33 is moved to condition the phonograph for reproducing the translating device is shifted to a reproducing condition and the rod 3 is turned to shift the switch 4| so as to connect the microphone 23 to the output of the amplier and the translating device to the input, the microphone being then employed as a receiver. The switch I9 is then used to control the clutch I to start and stop rotation of the record. It is to be noted however that the recorded matter to be reproduced may have been recorded at the lower speed employed in the recordation of telephone conversations and that it may then be necessary to rotate the record at an accordingly slower speed during the reproduction thereof. In this event, the switch I3 is not used. Instead, the clutch 53 is engaged by turning the knob 'I2. The spring finger 12a is moved out of the notch Bla of the collar 61 as this is done. After the reproducing operation, the knob is returned either manually to its normal position or, if the microphone 2Il is placed on the support It, this return is eiected automatically by way of the shaft I and plate 69.

In Figure 6 there is shown a second embodiment of my invention which is arranged also to permit the selective recordation of matter from a plurality of sources without the requirement that any independent selecting operation be performed. The parts of the system which correspond with those of the previous embodiment are referred to by corresponding reference characters. In the instant embodiment, the phonograph has only the clutch IE for controlling the rotation of the record '5. At the dictation-recording station there is a stationary microphone I I9, which is not intended for hand use but is xed in location as on a desk. Also, at this station there is a start-stop control for the clutch Ic. This is in the form of a foot-operated switch referred to as III. This switch has a housing II2 from which projects a spring-urged plunger II2a carrying a pole member I I3 normally contacting the upper terminal H4 which is associated with the stop coil I'I of the electromagnetic actuating device III. When the operator wishes to start the rotation of the record, he presses the member II2a to cause the pole member I I3 to make contact with a terminal I I5 which is associated with the start coil of the actuating device I4.

Also, there is provided in the housing II2 another switch IIB. This switch is electrically shielded from the first switch III and is operated also by the plunger II2a. For this purpose, the plunger II2a has an extension |I2b insulatedly carrying a pole member II'I. This member is moved between two terminals IIB and |I9 which are respectively associated with the voice circuit I2IJ of the microphone I|0 and the voice circuit oi' the telephone pickup 85.

Mounted on the pivot 92 at the telephone desk set 86 is an arm |2I having an extension |22 terminating Within the cradle 86C for operation by the telephone hand set 86a as in the manner described in connection with the foregoing embodiment. At the rear of the pivot h2, the arm I2| carries an insulated pole member |23 movable between two stationary terminals |24 and |25. The terminal |24 is connected through the terminal II5 of the foot switch III to the start coil I6 of the actuating device I4, Yand the terminal |25 is connected directly to the pole member ||3 of the switch III.

The present system is conditioned for instant operation by closing a switch MI for the motor M and the switch 40a, for the amplier 40. Also, of course, the hand lever 33 is set to recording, or reproducing, position. If set at recording position, a recordation from either the telephone or the dictation microphone may be eiected without exercising any independent selective operation of any control. For instance, if it is desired to record dictation, it is only necessary to press the plunger |I2. This disconnects the circuit 85 from the voice circuit and connects the dictation microphone to the translating device by way of the amplier. At the same time, the switch III will close the circuit of the start coil of the device IG and engage the clutch II). On the other hand, if a telephone conversation is to be recorded, the mere removal of the hand set 86a from the cradle will cause the start coil I 5 to be energized to engage the clutch III to cause continuous rotation of the record. Since the pole member II'I of the switch III is normally connected with the circuit 85' of the pickup device 85, the voice signals of the latter are transmitted through the amplifier to the translating device and recorded on the record 'I'.

For reproducing purposes, the instant arrangement employs a speaker |26 which is preferably mounted adjacent to the microphone III) within the single housing I IIla for the two units. The speaker |25 has leads |28 connected directly with the aforementioned terminals 83 of the switch 4I. Thus, when the phonograph is conditioned for reproducing, the switch 5I is rotated to cause connection of the speaker |26 and disconnection of the pickup 85. Under such condition, the plunger II2a of the switch II I will serve only to control the rotation of the record.

While I have herein particularly shown and described certain preferred embodiments of my invention, these will be understood to be illustrative and not limitative thereof as the same is subject to changes and modifications without departure from the scope of my invention which I endeavor to express according to the following claims.

I claim:

1. In a phonograph system adapted for the recordaticn of speech characterized by frequent interruptions and of speech which is relatively continuous including a rotatable record carrier, a record-cooperable translating device and a start-stop control means placeable into eiective condition to start and stop rotation of said record carrier at will; the combination of first and second microphones for said interrupted speech and relatively continuous speech respectively, supports for said microphones respectively, means operated incidental to the removal of Said first microphone from its support for connecting the said microphone to said translating device vand concurrently placing said startstop control means into eifective condition, and means associated with the support of said second microphone rand operated incidental to the removal of the microphone therefrom while said iirst microphone is on its respective support for operatively connecting said second microphone to said translating device and concurrently placing said record carrier in rotation. y

2. In a phonograph system adapted for the selective recordation of dictation and telephone conversations, including a rotatable record carrier, 'a record-cooperating translating device and a drive motor for said carrier: the combination of a hand-type dictation microphone, a hand-type telephone microphone, first and second supports for said dictation and telephone microphones respectively, means associated with 'said rst support and responsive to removal therefrom or" said dictation microphone for operatively connecting said dictation microphone to said translating dev-iceand starting said motor, and means associated with said second support and responsive to removal therefrom of said telephone microphone for operatively connect- 'ing said telephone microphone to said translating device and concurrently causing rotation of said record carrier by said motor.

3. In a phonograph system adapted for the selective recordation of sounds from different sources, said system including a rotatable record carrier, a drive for said carrier and a record-cooperating translating device: the combination of microphones for said sources respectively, respective supports for said microphones, circuits for connecting said translating device to said microphones respectively, switch means in said circuits respectively, means associated with each of said supports and operable by the respective one of said microphones upon removal of the microphone from its support for closing the respective switch means to connect the respective microphone to said translating device, and means associated with at least one of said supports for causing said record carrier to be rotated 4by said drive concurrently as the respective microphone is connected to said translating device.

4. In a phonograph system adapted for the selective recordation of subject matter of different character: the combination of a rotatable carrier, a drive system for said'carrier, means for selectively conditioning said drive system to operate at different effective speeds, hand microphones for said diierent subject matters respectively, respective supports ior said microphones, a rst means controlled by one of said microphones as the same is removed from its support for conditioning said drive system for operation at one speed, and a second means controlled by a second one of said microphones as the same is removed from its support for conditioning said drive system for operation at a different speed.

5. The combination set forth in claim 4 wherein said second means is operatively connected with said rst means to be effective only when said rst microphone is on its support.

6. In a phonograph system adapted for the selective recordation of dictation and telephone conversations: the combination of a hand-type dictation microphone, a hand-type telephone microphone, supports for said microphone respectively, a rotatable record carrier, a drive system for said carrier, means jOr Selectively conditioning said drive system to operate at higher and lower ef- Vfective speeds, means4 associated with the support for said dictation microphone and controlled as an incident to the removal of the dictation rmicrophone therefrom for conditioning said drive system for operation at higher speed, and means associated with the support for said telephone microphone and operated incidental to the removal of the telephone microphone therefrom for conjditioning said drive system for operation at said lower speed.

7. In a phonograph system adapted for the se'- lective recordation of matters of diiierent charac'ter including a record carrier and a drive motor: the combination of a drive transmission including a clutch for coupling said motor to saidcarrier to drive the latter at one speed, a second drive transmission including a clutch for coupling said 'motor to said 'carrier to drive the latter at a dif'- ferent speed, means for operating said clutches respectively, and intercoupling means. between said clutches for allowing only one of the clutches to be engaged at one time.

8. In a phonograph system adapted for recording dictation and other sounds comprising va dic,- tating machine including a record carrier, a Ydrive motor, a dictation microphone and a main clutch for rcoupling said motor to said carrier to drive the carrier at a given speed: the combination of a support on said machine for said microphone, a transmission including an auxiliary clutch for coupling said motor to said carrier and driving the carrier at a different speed, remote means for controlling said main clutch, and means associated with said support and efrective when said microphone is resting thereon for disabling said main clutch and concurrently engaging said aux: ilary clutch.

9. In a phonograph system adapted for the selective recordaticnof dictation and telephone Accnversations including a rotatable record carrier and a record-cooperating translating device: the combination of a drive system for said carrier conditionable for quick start-stop rotation of said carrier at one speed and for continuous rotation of the carrier at another speed, dictation and tele'- phone microphones, supports for said microphones respectively, means associated with the support of said dictation microphone and operated upon removing the microphone therefrom for automatically conditioning said drive system for quick start-stop operation, and means associated with the support for said telephone microphone and operated upon removing the telephone microphone therefrom while said dictation microphone is on its support for operatively connecting the telephone microphone to said translating device and concurrently conditioning said drive system to cause continuous rotation of said record carr1er.

10. In a phonographic recording system including a rotatable record carrier and a drive system for rotating said carrier: the combination of a start-stop control for said drive system operable to start and stop rotation of said record carrier, a telephone hand-type microphone, a support for holding the microphone when the same is not in use, means associated with said support for operation automatically upon removing said microphone from said support and replacing the same thereon to start and stop rotation of said record carrier, and means responsive to said start-stop control when the same is moved to start and stop positions for respectively abling and disabling said last-stated means.

l1 11. In a phonographic recording system including a rotatable carrier for a record, a recordcooperable translating device and a drive system for said record carrier: the combination of a dictation microphone, a hand-type telephone microphone, a support for holding Said telephone Vmicrophone when the same is not in use, a conond control device for operatively connecting said dictation microphone to said translating device as the control device is moved into start position and for operatively connecting said telephone microphone to said translating device as the same is returned to stop position.

12. In a phonograph system adapted for the selective recordation of dictation and telephone conversations, including a rotatable record carrier, a record-cooperating translating device, a drive motor for said carrier, and hand-type dictation and telephone microphones: the combination of first and second supports for said dictation and telephone microphones respectively; clutch means for coupling said motor to said record carrier; start-stop means for said motor; means for engaging said clutch means; electrical control means associated With said first support and connected to said start-stop means and clutch-engaging means to cause said motor to be started when the dictation microphone is removed from said rst support and to cause said motor to be stopped and said clutch means to be engaged when said dictation microphone is replaced on said support; and electrical control means associated with said second support and connected to said start-stop means to cause said motor to be started and stopped respectively as said telephone microphone is removed rom and replaced on said record support.

13. In a combined telephone and dictation recording system, including a record carrier, a drive motor for moving said carrier and a clutch for coupling said motor to said carrier: the combination of dictation and telephone microphones, supports for said microphones respectively, means controlled by said dictation microphone as the same is placed on its support for engaging said clutch, and means controlled by said telephone microphone as the same is removed from its support for starting said motor.

14. In a combined telephone and dictation recording system, including a record carrier, a drive motor for moving said carrier and a clutch for coupling said motor to said carrier: the combination of dictation and telephone microphones, supports for said microphones respectively, means associated with the support for said dictation microphone and operated incidental to the removal of said dictation microphone therefrom and the replacing of said dictation microphone thereon for engaging and disengaging said clutch respectively, and means associated with the supe port for said telephone microphone and operated incidental to the removal of said telephone microphone therefrom and the replacing of the same thereon for starting and stopping saidmotor respectively. y

15. In a combined telephone and dictation recording system including a record carrier: the combination of telephone and dictation microphones, a support for said telephone microphone, a dictation start-stop means for quick start-andstop operation of said record carrier, means responsive to said start-stop means as the same is moved to stop position for disabling said dictation microphone, means associated with said support for operation automatically upon removing said telephone microphone therefrom and upon returning the same thereon to start and stop said carrier, and means controlled by said start-stop means for disabling said last-stated means when said start-stop means is in start position.

LOUIS Z. LA FOREST.

REFERENCES CITED The following references are of record in the :file of this patent:

UNITED STATES PATENTS Number Name Date 2,079,089 Varley May 4, 1937 2,305,681 Dunning Dec. 22, 1942 

